A Method for Smear Removal of Push-Broom Imaging Spectrometers
CUI Yi1,2, WEI Jun1, TANG Yu-yu1, MA Liang1,2
1. Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China 2. University of Chinese Academy of Sciences, Beijing 100049, China
Abstract：Smear is an inherent problem of area CCD and there have been many researches on how to deduct it. However, the imaging model of push-broom imaging spectrometer is very special, in which the usual methods are no longer applicable. To develop a new method that is suitable for the application of imaging spectrometer, a more detailed model was built. The problem of distortion of usual method was also analyzed and simulated. The original image of each channel was used to estimate the spectral distribution of the target, by which the contribution of smear of the black optical channel to each channel is quantified. Both simulation and restoration result of the remote sensing image showed that the new method worked well for the CCD smear deduction of push-broom imaging spectrometer.
[1] LI Tong-hai, ZHANG De-lian, ZHAO Xin-liang(李同海, 张德联, 赵新亮). Science Technology and Engineering(科学技术与工程), 2008, 8(14): 3924. [2] Powell K, Chana D, Fish D, et al. Applied Optics, 1999, 38(8): 1343. [3] FU Ping(傅 平). Piezoelectrics and Acoustooptics(压电与声光), 2004, 26，(1): 72. [4] HAN Cai-qin, LIU Zhong-bin(韩采芹, 柳忠彬). Science Technology and Engineering(科学技术与工程), 2009, 9(15): 4336. [5] Han Y S, Choi E, Kang M G. IEEE Transactions on Consumer Electronics, 2009，2287. [6] ZHANG Yu, WANG Wen-hua, LI Guo-ning, et al(张 宇, 王文华, 李国宁, 等). Infrared and Laser Engineering(红外与激光工程), 2012, 41(7): 1952. [7] HUANG Zong-fu, WANG Hong-yi, HAN Jian-tao, et al(黄宗福, 王宏义, 韩建涛, 等). Signal Processing(信号处理), 2010, 26(4): 607.
